Unit Award Scheme

demonstrated the ability to

1. filter a mixture of dirty sea water to separate out the solid substances from those dissolved in the water

2. set up the appropriate equipment to safely evaporate half of the filtrate to leave salt crystals

3. set up and carry out a simple distillation experiment to safely collect pure water from the other half of the sea water filtrate

4. describe the main stages of the process used to extract the pure water from the dirty sea water

5. describe how they carried out these stages safely

6. use key terms, eg dissolve, solution, evaporation, to correctly describe the properties of the mixture at each stage of the process

7. explain how they would test they had collected pure water.